rose: i am pleased to have matt damon and gary whitey table, welcome, good to see you again, 1984, guatemala, take me there. >> so i am an undergrad studying engineering and i took this mission trip, you know, to volunteer on a construction project, and i took a side trip to guatemala city, you know, i am grew up in the midwest and hadn't really experienced the world and to be thrust into the slums where there were kids, you know, wading through this raw sewage, walking to collect water from these contaminated barrels you wouldn't let your pet be drinking the water from, and, you know, afterwards i got on a plane and back in the u.s., two hour flight and it is just, that just reay stck me, it is like this just shouldn't be. how can we figure out how to solve this? so i immersed myself in it and tried to figure out what is happening, how do we do better and discovered at that time about 1.2 billion people didn't have access to water. and, you know, a couple of billion, two and a half billion didn't have access to sanitation, so it was just initially this is a visceral action this can't stand